This paper describes a FORTRAN IV digital computer program for solving ordinary differential equations. Two versions are described, one without graphical display for use in standard batch-processing. The second version is written for the DEC PDP-9, and features a self-scaling display-driving...

A mathematical model for a proposed magnetohydrodynamic (MHD) liquid-metal experimental loop was developed. The purpose of the experiment was to demonstrate the capability of an MHD, DC generator to produce 20 kW of electric power by directly converting thermal to electrical energy. Basic...

We present a framework within which to evaluate and compare computational methods to solve elliptic partial differential equations. We then report on the results of comparisons of some classical methods as well as a new one presented here. Our main motivation is the belief that the standard...

Homogeneous digital analogous structures intended for solving a broad class of simulation are worked out. The above-mentioned simulating structures consist of processors and homogeneous commutation register structures. Each processor can be rearranged for solving some enormous operations....

The vertical transport of fallout particles from nuclear weapon explosions consists of gravitational settling combined with eddy diffusion. This movement has been simulated on an analog computer. The particle concentration at different altitudes above the ground, the fallout rate and the...

Dynamic errors and destabilizing effect in hybrid loops, introduced by sampling of the analog variables before digital processing, have been studied in the most general case in a previous paper published by Elmer G. Gilbert and Ghislain C. Vansteenkiste.

In the analog simulation of two-variable functions by means of logic analogy circuits, a function can be described as a lattice polynomial.

This paper describes the application of the analogue solution of distributed parameter systems to the airfoil design problem. Conformal transformations are used to convert the boundary value problem, described by a laplacian field with exterior type of boundary conditions, to a set of initial...